A police car covered in snow Sunday during a storm that caused widespread closures Monday, although Detroit municipal offices and the Frank Murphy Hall of Justice remained open.(Eric Lacy | MLive)

DETROIT, MI -- City offices remained open Monday morning despite some 9 inches of snowfall, with officials are more concerned over upcoming frigid temperatures.

Detroit's Chief Compliance Officer Gary Brown told WWJ on Monday morning the city has seen 74 water main breaks over the last 24 hours, likely caused by cold temperatures.

The National Weather Service anticipates wind chill temperatures as low as 27 degrees below zero Monday and 37 below Tuesday.

Brown said diesel-engine vehicles could also be affected by the subzero temperatures.

"The lower temperatures are more of a concern than the snow," said Brown, who drove to his downtown office morning in a slow 20-minute commute from around 8 Mile Road and Woodward Avenue.

Detroit crews have been steadily trying to clear the city's 660 miles of major roads, and contractors began working on 1,880 miles of residential streets early Monday morning in an agreement that kicks in when snowfall exceeds 6 inches.

Brown said the contractors have 16 hours to finish addressing residential streets.

"The city is open for business and we're going to get the job done," he said.